News Flash Home
The original item was published from 8/23/2017 2:08:03 PM to 9/9/2017 12:00:08 AM.

News Flash

Home

Posted on: August 23, 2017

[ARCHIVED] Japanese Beetles

japanese-beetles

Japanese beetles are alive and well and probably feeding on the plants in your yard. They feed on shrubs, turf grasses, and trees, leaving behind damaged plants.

The adult beetles appear in late June through September to feed, mate and lay eggs. The beetles are destructive, but treatments to control the larvae and the beetles are available.

It’s important to use the appropriate type of treatment to control the beetles. Many insecticides are ineffective when Japanese beetles are in the grub stage. In addition, some insecticides are harmful to bees, so the city encourages residents to consider alternatives to chemical insecticides.

If you see a moderate number of Japanese beetles, experts suggest they can be handpicked or knocked off into soapy water. This is more effective if done in the evening because Japanese beetles are active feeders at night.

Another option is to spray the lawn with two tablespoons of liquid dishwashing soap diluted in one gallon of water per 1,000 square feet of lawn. The grubs will come above ground and birds can eat them. Spray once each week until grubs no longer surface. Since beetles have two life cycles per season it is most effective if done in late spring and autumn when the beetles are in the grub stage.

Many types of birds, including grackles, meadowlarks, starlings, cardinals, pheasants, chickens, ducks, and geese feed on the Japanese beetles. Starlings, grackles, crows, and gulls eat the Japanese beetle larvae.

Milky spore disease is another alternative method of treatment. It is a safe bacterium that is applied to grass as a powder. It is effective only in controlling Japanese beetle grubs and works best when the soil temperatures are between 60° and 70° F. In cooler climates, milky spore takes longer to spread. Research has determined that milky spore has no impact on beneficial organisms in the soil. Visit the University of Illinois website to learn more about milky spore disease.

In addition, the University of Minnesota offers information about controlling Japanese beetles and other insects. Find information at www.extension.umn.edu/garden/insects or call the Minnesota Landscape Arboretum Yard and Garden line at 612-301-7590.

Facebook Twitter Email

Other News in Home

Please join us for a community visioning event on January 10.

Community Visioning Event Jan. 10

Posted on: January 10, 2023
2023 Budget Finalized and Approved

2023 City Budget Finalized and Approved

Posted on: December 20, 2022
People ice skate at the Guidant John Rose MN OVAL.

Roseville Winter Fun

Posted on: November 30, 2022
roseville-thanksgiving-closures

City Offices Closed November 24 and 25

Posted on: November 25, 2022
"Winter in Roseville" with a picture of a snowplow in the background.

Winter In Roseville

Posted on: November 14, 2022
volunteer-spotlight-jessica-raygor

Volunteer Spotlight: Jessica Raygor

Posted on: November 10, 2022
trick-or-treat-safety-icons-2

Trick-or-Treat Safety Tips

Posted on: October 31, 2022
2023-budget-update

2023 Budget Update

Posted on: October 27, 2022
drive-through-grocery-event

Free Drive-Through Grocery Event

Posted on: October 24, 2022
pocahontas-park

Help Rename Pocahontas Park

Posted on: October 13, 2022
Give blood at Roseville Fire Station on October 21 and receive a $10 gift card.

Give Blood and Receive a $10 Gift Card

Posted on: October 13, 2022
hehaling-gardens-muriel-sahlin

Sign up for Healing Gardens Guided Tour

Posted on: September 22, 2022
roseville-elections-2

2022 Roseville Election Results

Posted on: September 21, 2022
City Appoints Two New Commissioners

City Appoints Two New Commissioners

Posted on: September 21, 2022
Emerald Ash Borer

Emerald Ash Borer Update

Posted on: August 30, 2022
utility-bill

Understanding Your Utility Bill

Posted on: August 31, 2022
roseville-elections

2022 Election Candidate Forums

Posted on: August 24, 2022
Hispanic Heritage Month Graphic with designs

City Recognizes Hispanic Heritage Month

Posted on: August 26, 2022
2023-budget-by-function

2023 Budget Discussions Move Forward

Posted on: August 23, 2022

Community Corner: Reservoir Woods

Posted on: August 31, 2022
three volunteers pose for photo while planting red and green flowers along Lexington Avenue in Rosev

Lexington Ave In Bloom

Posted on: July 8, 2022
water faucet

Annual Water Quality Report Released

Posted on: June 30, 2022
mapping-prejudice

Mapping Prejudice in Ramsey County

Posted on: June 16, 2022
juneteenth-square

Juneteenth Celebration - @ The ROG

Posted on: June 16, 2022
plant-harvest-taste-enews

Free Kids Gardening Classes

Posted on: June 2, 2022
new-commissioners

City Appoints Three New Commissioners

Posted on: March 23, 2022
redistricting-graphic

Council approves new precinct maps

Posted on: March 29, 2022
Brosnahan

Q&A with Fire Chief David Brosnahan

Posted on: March 4, 2022
Open to Business photo

Roseville is Open to Business

Posted on: January 19, 2022